US5799595A - Wet ash remover installation - Google Patents

Wet ash remover installation Download PDF

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Publication number
US5799595A
US5799595A US08/712,361 US71236196A US5799595A US 5799595 A US5799595 A US 5799595A US 71236196 A US71236196 A US 71236196A US 5799595 A US5799595 A US 5799595A
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US
United States
Prior art keywords
wet ash
ash
wet
remover
ash remover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/712,361
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English (en)
Inventor
Bernhard Michelbrink
Karl Bleckmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BLK BETEILIGUNGS GmbH
Hitachi Power Europe GmbH
Original Assignee
Babcock Lentjes Kraftwerkstechnik GmbH
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Assigned to BABCOCK LENTJES KRATWERKSTECHNIK GMBH reassignment BABCOCK LENTJES KRATWERKSTECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BLECKMANN, KARL, MICHELBRINK, BERNHARD
Application granted granted Critical
Publication of US5799595A publication Critical patent/US5799595A/en
Assigned to BLK BETEILIGUNGS GMBH reassignment BLK BETEILIGUNGS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BABCOCK LENTJES KRAFTWERKSTECHNIK GMBH
Assigned to BABCOCK KRAFTWERKSTECHNIK GMBH reassignment BABCOCK KRAFTWERKSTECHNIK GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BLK BETEILIGUNGS GMBH
Assigned to BABCOCK BORSIG POWER SYSTEMS GMBH reassignment BABCOCK BORSIG POWER SYSTEMS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BABCOCK KRAFTWERKSTECHNIK GMBH
Assigned to BABCOCK-HITACHI EUROPE GMBH reassignment BABCOCK-HITACHI EUROPE GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BABCOCK BORSIG POWER SYSTEMS GMBH
Assigned to HITACHI POWER EUROPE GMBH reassignment HITACHI POWER EUROPE GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BABCOCK-HITACHI EUROPE GMBH
Assigned to HITACHI POWER EUROPE GMBH reassignment HITACHI POWER EUROPE GMBH CHANGE OF ADDRESS Assignors: HITACHI POWER EUROPE GMBH
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F23J1/02—Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices

Definitions

  • the invention relates to a wet ash remover installation with a first wet ash remover in operating position and a second similar and movable wet ash remover which is in reserve position, according to the features of the preamble of claim 1.
  • a known wet ash remover installation of this type (DE-PS 28 58 311) is positioned below a boiler with solid ash firing which is provided with a wide ash funnel.
  • the movable wall portion of the ash remover consists of several plates which are connected to stationary supports because of the large funnel width.
  • the wet ash remover in operating position is to be moved, the water must be drained from the wet ash remover prior to loosening of the movable wall portion.
  • the exchange of the wet ash remover itself is not possible without a short interruption of the boiler operation.
  • the operating ash remover and the reserve ash remover which are both filled with water can be coupled to be water tight. After the gates are lowered, they form a unit with a common water fill. This unit can be driven past and below the ash funnel without having to stop the firing during that time. After displacement of the unit, the gates of both wet ash removers are positioned upright again and the ash removers decoupled so that maintenance operations can be performed on the previously operating ash remover, while the ash remover previously in reserve receives the ash from the firing and cools and removes it.
  • FIG. 1 the lower part of a boiler with a wet ash remover
  • FIG. 2 the side view of a wet ash remover
  • FIG. 3 the region of connection between two mutually coupled wet ash removers
  • FIG. 4 the detail Z according to FIG. 3 and in longitudinal section
  • FIGS. 5 and 6 two ash funnels which are positioned side by side with wet ash removers in different operating positions.
  • the lower part of the fire chamber 1 of a boiler is illustrated which is constructed as an ash funnel 2.
  • the ash funnel 2 has in the bottom thereof an opening 3 to which a dip member 4 is connected. Coal is combusted in the fire chamber 1 whereby the firing is preferably a molten ash firing, so that the ash is produced in molten form.
  • the firing can also be a solid ash firing.
  • the ash falls from the ash funnel 2 into the wet ash remover 5 which is positioned below the ash funnel 2.
  • the wet ash remover 5 consists of a movable trough 7 which is provided with a travelling gear 6 and in which a conveyor circulates.
  • the conveyer is a drag chain conveyor, the chains 9 of which are provided with drag bars 8 and are guided within the trough 7 around rollers 10.
  • This drag chain conveyor transports the ash out of the trough 7.
  • the trough 7 is filled with water for the cooling of the ash. In order to ensure sealing of the firing chamber to ambient, the water level in the trough 7 remains sufficiently high so that the dip member 4 always maintains immersed in the water during operation of the boiler.
  • the maximum depth of immersion of the dip member 4 when the boiler is hot is shown in FIG. 1 by way of the thin line 11.
  • a reserve ash remover 12 is provided which can be exchanged for the wet ash remover 5 in operation.
  • the wet ash remover 5 and the reserve ash remover 12 are symmetrically constructed.
  • An opening 14 is provided in a side wall 13 of the wet ash remover 5 which extends from the upper edge thereof.
  • the width of the opening 14 corresponds at least to the width of that side of the dip member 4 which lies in direction of travel of the wet ash remover 5.
  • the height of the opening 14 depends on the maximum immersion depth of the dip member 4 as measured from the upper edge of the side wall 13 of the trough 7.
  • the side wall 13 extends outwardly whereby the opening 14 forms the forward limit of this outwardly protruding portion 14.
  • the opening 14 is closable by way of a gate 16 which can be swivelled from within the trough 7 against a frame 17 surrounding the opening 14.
  • a sealing flange 18 is provided on the frame 17 which supports a compressible seal 19. In the closed condition, the gate 16 rests against this seal 19.
  • the gate 16 can be made of one or more parts. Several gates 16 positioned side by side can be used instead of a single gate 16.
  • the gate 16 is rigidly affixed to a shaft 20 which at its ends and outside the outwardly protruding portion 15 is rotatably supported on the outside of the side wall 13 of the trough 7 and is sealed, for example, by way of a stuffing box seal.
  • a lever 21 is rigidly affixed to the shaft 20 at both sides of the gate 16. By way of these levers 21, the gate 16 can be swivelled from the vertical position to the horizontal position or vice versa.
  • the levers 21 can be manually operated.
  • the levers are connected with a hydraulic drive. This hydraulic drive consists of a cylinder 22 which is rotatably affixed to the side wall 13 of the trough 7.
  • the piston rod 23 extending from the cylinder 22 is rotatably affixed to the free end of the lever 21.
  • the lever 21 can also be replaced by a toothed section rigidly affixed to the shaft 20 which engages a gear driven by an electric motor.
  • the reserve ash remover 12 is constructed in the same manner as the above-described wet ash remover 5.
  • the reserve ash remover 12 is positioned below the boiler in reserve position in such a way that the openings 14 of the troughs 7 which are closed by the gate 16 are located in the opposing sides of the wet ash removers 5 and 12.
  • the wet ash remover 5 and the reserve ash remover 12 are on their opposing side walls 13 provided with coupling elements whereby the two wet ash removers 5, 12 can be temporarily connected with each other.
  • the coupling elements can consist of a screwed connection including threaded bolts which penetrate the side walls 13 of the troughs 7 and are secured by nuts.
  • Another coupling element is the turn buckle 24 illustrated in FIG. 4. This turn buckle 24 consists of two consoles 25 respectively affixed to a side wall 13 of the trough 7.
  • a threaded bar 26 is rotatably affixed to each console 25.
  • a threaded bushing 27 engages the two threaded bars 26.
  • the boiler illustrated in FIG. 5 is provided with two ash funnels 2 under which a wet ash remover 5 is respectively positioned.
  • a reserve ash remover 12 is provided between these two wet ash removers 5 and on both sides has an opening 14 which is closable by a gate 16. Because of this construction, the reserve ash remover 12 can be exchanged as required for the right or left wet ash remover 5 shown in the drawing. In order to exchange a wet ash remover 5 in operation for a reserve ash remover 12 without interruption of the boiler operation, the reserve ash remover 12 which is filled with water is moved beside the wet ash remover 5 and coupled thereto.
  • the wet ash remover 5 and the reserve ash remover 12 are connected liquid-tight by way of outer seal 29. Thereafter, the gates 16 in the adjacent side walls 13 are swivelled into the horizontal position so that a common water-filled interior is created in the wet ash remover 5 and the reserve ash remover 12 by way of the openings 14. In this condition, the wet ash remover 5 is moved from of the region of the ash funnel 2 until the reserve ash remover 12 is positioned below the ash funnel 2 and the dip member 4 is immersed in the trough 7 of the reserve ash remover 12. This operating condition is shown in FIG. 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
US08/712,361 1995-09-20 1996-09-11 Wet ash remover installation Expired - Lifetime US5799595A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19534822A DE19534822B4 (de) 1995-09-20 1995-09-20 Naßentascheranlage
DE19534822.2 1995-09-20

Publications (1)

Publication Number Publication Date
US5799595A true US5799595A (en) 1998-09-01

Family

ID=7772622

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/712,361 Expired - Lifetime US5799595A (en) 1995-09-20 1996-09-11 Wet ash remover installation

Country Status (7)

Country Link
US (1) US5799595A (de)
EP (1) EP0789192B1 (de)
AU (1) AU702490B2 (de)
CA (1) CA2186040A1 (de)
DE (2) DE19534822B4 (de)
DK (1) DK0789192T3 (de)
PT (1) PT789192E (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003005250A1 (en) * 2001-07-06 2003-01-16 Flixco Pty Limited Information system
US6631712B2 (en) 2001-07-18 2003-10-14 Lawrence J Koncelik, Jr. Aquatic barbecue ash extinguisher and remover
US20110226194A1 (en) * 2010-03-22 2011-09-22 Mooney Gary D Bottom Ash Dewatering System Using a Remote Submerged Scraper Conveyor
US20130276723A1 (en) * 2012-03-27 2013-10-24 Daniel R. Higgins Method and Apparatus for Improved Firing of Biomass and Other Solid Fuels for Steam Production and Gasification

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006003506B4 (de) * 2006-01-24 2012-01-12 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Anlage zur Handhabung und Aufbereitung von festen Verbrennungsrückständen aus einer Feuerungsanlage
CN103968369B (zh) * 2014-05-22 2017-02-22 航天长征化学工程股份有限公司 一种煤气化中废物湿灰的二次炭燃烧系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931773A (en) * 1973-12-22 1976-01-13 Evt Energie-Und Verfahrenstechik Gmbh Ash removal apparatus for coal-dust firing equipment
US4227468A (en) * 1978-07-11 1980-10-14 Deutsche Babcock Aktiengesellschaft Immersion piece for the ash funnel of a combustion chamber
US4387651A (en) * 1981-01-02 1983-06-14 Combustion Engineering, Inc. Removable seal plates
US4545305A (en) * 1984-10-05 1985-10-08 Combustion Engineering, Inc. Combined primary and spare submerged scraper conveyor arrangement
US4790250A (en) * 1987-01-30 1988-12-13 Westinghouse Electric Corp. Dry ash handling system for an incinerator
US5255615A (en) * 1990-03-02 1993-10-26 Mario Magaldi System for discharging bottom ash from steam-producing boilers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE302610C (de) *
DE1930432C3 (de) * 1969-06-14 1973-09-20 Deutsche Babcock & Wilcox Ag, 4200 Oberhausen Entaschungseinnchtung fur Dampf kesselfeuerungen
DE2858311C2 (de) * 1978-07-11 1987-10-29 Deutsche Babcock Ag, 4200 Oberhausen, De
DE7920101U1 (de) * 1979-07-13 1979-10-31 Deutsche Babcock Ag, 4200 Oberhausen Entascher

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931773A (en) * 1973-12-22 1976-01-13 Evt Energie-Und Verfahrenstechik Gmbh Ash removal apparatus for coal-dust firing equipment
US4227468A (en) * 1978-07-11 1980-10-14 Deutsche Babcock Aktiengesellschaft Immersion piece for the ash funnel of a combustion chamber
US4387651A (en) * 1981-01-02 1983-06-14 Combustion Engineering, Inc. Removable seal plates
US4545305A (en) * 1984-10-05 1985-10-08 Combustion Engineering, Inc. Combined primary and spare submerged scraper conveyor arrangement
US4790250A (en) * 1987-01-30 1988-12-13 Westinghouse Electric Corp. Dry ash handling system for an incinerator
US5255615A (en) * 1990-03-02 1993-10-26 Mario Magaldi System for discharging bottom ash from steam-producing boilers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003005250A1 (en) * 2001-07-06 2003-01-16 Flixco Pty Limited Information system
US6631712B2 (en) 2001-07-18 2003-10-14 Lawrence J Koncelik, Jr. Aquatic barbecue ash extinguisher and remover
US6880546B1 (en) 2001-07-18 2005-04-19 Lawrence J Koncelik, Jr. Barbecue grill with ash discharge
US20110226194A1 (en) * 2010-03-22 2011-09-22 Mooney Gary D Bottom Ash Dewatering System Using a Remote Submerged Scraper Conveyor
US9593850B2 (en) * 2010-03-22 2017-03-14 Clyde Bergemann, Inc. Bottom ash dewatering system using a remote submerged scraper conveyor
US20130276723A1 (en) * 2012-03-27 2013-10-24 Daniel R. Higgins Method and Apparatus for Improved Firing of Biomass and Other Solid Fuels for Steam Production and Gasification
US9140446B2 (en) * 2012-03-27 2015-09-22 Daniel R. Higgins Method and apparatus for improved firing of biomass and other solid fuels for steam production and gasification
US9581325B2 (en) 2012-03-27 2017-02-28 Daniel R. Higgins Method and apparatus for improved firing of biomass and other solid fuels for steam production and gasification
US10627105B2 (en) 2012-03-27 2020-04-21 Daniel R Higgins Method and apparatus for improved firing of biomass and other solid fuels for steam production and gasification

Also Published As

Publication number Publication date
EP0789192A2 (de) 1997-08-13
DE19534822B4 (de) 2004-02-05
EP0789192A3 (de) 1998-06-10
CA2186040A1 (en) 1997-03-21
AU702490B2 (en) 1999-02-25
EP0789192B1 (de) 2001-11-14
AU6194796A (en) 1997-03-27
PT789192E (pt) 2002-05-31
DE19534822A1 (de) 1997-03-27
DE59608200D1 (de) 2001-12-20
DK0789192T3 (da) 2002-03-11

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